US2097957A

US2097957A - Suspension bracket for hoists

Info

Publication number: US2097957A
Application number: US81894A
Authority: US
Inventors: Frank E Stahl
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-05-26
Filing date: 1936-05-26
Publication date: 1937-11-02
Anticipated expiration: 1954-11-02

Description

Nov. 2, 1937. F. E. STAHL 2,097,957

SUSPENSION BRACKET FOR HOISTS Filed May 26, 19-36 2 Sheets-Sheet l l re/vmiov;

FRANK E. STAHL Nov. 2, 1937. s H 2,097,957

SUSPENSION BRACKET FOR HOISTS Filed May 26, 1956 2 Sheets-Sheet 2' ELY/"677,110?" FRANK E. STAHL Patented Nov. 2, 1937 UNITED STATES PATENT FFIQE 9 Claims.

My invention relates in general tobrackets for hoists and more particularly to a bracket which may be attached to a hoist for the purpose of increasing the capacity thereof by the use of the bracket and a lower chain block.

The principal object has been to provide a bracket which may be used in connection with a casing of a standard hoist or puller for increasing the capacity thereof.

Another object has been to provide a bracket of this nature which shall be so designed as to have one part thereof fitting into the hoist casing where the usual hook thereof is placed and hav ing another portion so designed as to be fastened to the casing with the means usually supplied to secure the casing parts together, whereby no alterations of or extra parts upon the casing are necessary.

Another object has been to design a bracket provided with a swivel hook and with a stop for limiting the movement of the bracket in relation to the hook, whereby the casing of the puller or hoist will be maintained in a substantially vertical position when carrying no load.

Another object has been to provide means for Fig. 3 is an enlarged, face view of the bracket.

Fig. 4 is a, fragmentary, transverse, sectional View taken on line 4-4 of Fig. 1, showing the multiple part casing of the puller and the manner of securing one part of my device thereto.

Fig. 5 is an enlarged, plan view of the bracket without the hook.

In Fig. 1 of the drawings, I have shown a puller 5 to which my bracket 6 is attached. The bracket is inverted L-shape in form and is provided with a horizontal arm 1 and with a depending arm 8. The horizontal arm is provided at'its free end with a downwardly extending, attaching member N. This member may be semi-spherically shaped, as shown, and fits into the recesses l2 formed in the casing parts l3 and Id of the casing of the hoist or puller 5. The bracket is also preferably provided at the point of junction of the horizontal arm I and the depending arm 8 with a perforated tab l5. The parts are so designed that when the semi-spherical attaching member II is located and secured within the recesses 12 of the casing parts of the puller, the perforation in the tab will register with the upper bolt It of the puller, which bolt, together with the bolt l'l, serves to secure the' two casing parts 13 and I4 together.

The horizontally extending arm 7 is provided with a substantially semi-spherical recess 20 in which is located a substantially semi-spherical washer 2|, such washer being provided with a bore 22. The hook 23 is provided with a cylindrical extension at at its lower end which engages the aperture 22. The lower end of the extension 24 is riveted over, as shown at 25, so as to firmly secure it to the washer 2 I. The opening 28 at the top of the recess 26 is larger than the neck 21 of the hook, whereby the hook is connected to the bracket inuniversal manner. The opening, however, is formed at the side opposite the puller casing with a retaining wall 28, thus making a D-shaped opening (see Fig. 5). Since the hook 23 is ofi center when the load is not being sustained by the puller or hoist, this wall will engage the neck of the hook and retain the casing in substantially upright position until the load is applied to the device. 7

The depending arm 8 of the bracket extends downwardly along the outside of the casing of the puller and is formed, as shown in Fig. 3, with two side flanges 3i) and an integral wall 3i. The side flanges are strengthened by reinforcing flanges 29, extending lengthwise of the arm 8. The lower end of this arm is. provided with upstanding interspaced flanges 32 which form recesses 33, extending laterally across the bracket. These recesses are bounded on each side by the side flanges 30. The lower end of the depending arm 8 is also provided with a centrally arranged slot 34 formed partly in the back wall 3! and between the upstanding flanges 32. The recesses 33 are designed to receive a link 28 at the end of the load chain of the puller, and the slot 34 is designed to receive the adjacent link [9. As will be seen, the recesses 33 are so formed in the arm that, when a link i3 is disposed therein, either of the side faces of the link will lie in a plane which is at substantially right angles to or laterally arranged with respect to a plane which includes the axis of the attaching member and which passes through the slot 35. The adjacent link I9 is, of course, arranged at right angles to the link E8 so that the plane of the slot 34 engaging the link if) is preferably also at right angles to the plane of the recesses 33 engaging the link IS. The side flanges 38 are provided near their lower ends with perforated extensions 35, which register with one another and with which a cotter pin 36 is engageable after the links of the chain have been engaged with the recesses 33 and slot 34, whereby the chain may be quickly attached to or detached from the bracket.

It will be obvious from the foregoing that a smaller capacity hoist or puller 5, for example a three-quarter ton hoist, may, by the use of my bracket and a lower block it, be easily converted into a one and one-half ton hoist. The only change which needs to be made in the threequarter ton structure is that it be supplied with a longer load-lift chain M, and that when as-- sembling the casing parts thereof, the depending attaching member H of the bracket be placed within the recesses E2 of such casing parts instead of the usual hook provided on the threequarter ton hoist. The bolt I6 is passed through the perforated tab it and into the casing for securing the bracket to the casing and the parts of the casing together. Obviously, the block 48 is provided with a lower hook a2, and the free end 43 of the chain, after having been passed around the sheave it of the lower block, is attached to the depending arm, as hereinbefore described.

Obviously, some modifications of the details herein shown and described may be made without departing from the spirit of my invention or the scope of the appended claims, and I do not, therefore, wish to be limited to the exact embodiment herein shown and described, the form shown being merely a preferred embodiment thereof.

Having thus described my invention, what I claim is:

1. The combination with a hoist having a casing, and a hook-receiving aperture formed therein, of a separate, suspension bracket formed with a depending, attaching member for engagement with the hook-receiving aperture of the casing,

'said bracket being provided with a depending arm formed with means for attaching the end of the load-lift chain of the hoist thereto, a hook for the bracket, and means for universally attaching the hook to the bracket.

2. The combination with a hoist having a casing, and a hook-receiving aperture formed therein, of a separate, suspension bracket formed with a depending, attaching member for engagement with the hook-receiving aperture of the casing, said bracket being provided with a depending arm formed with means for attaching the end of the load-lift chain of the hoist thereto, a perforated tab for rigidly fastening said bracket to said casing, a hook for the bracket, and means for universally attaching the hook to the bracket.

3. The combination with a hoist having a twopart casing, and a hook-receiving aperture formed at the joint therebetween, of a separate, suspension bracket formed with a depending, attaching flember for engagement with the hook-receiving aperture of the casing, a perforated tab for rigidly fastening said bracket to said casing, said bracket being provided with a depending arm formed with means for attaching the end of the load-lift chain of the hoist thereto, a hook for the bracket, and means for universally attaching the hook to the bracket.

4. The combination with a hoist having a casing, and a hook-receiving aperture therein, of

a separate, suspension bracket formed with a horizontal arm and a depending arm, a depending attaching member carried by the horizontal arm for engagement with the hook-receiving aperture of the casing, and said depending arm being formed at its lower end with link-receiving recesses and with a link-receiving slot, arranged at right angles to the recesses, for engagement with the adjacent links at the free end of the hoist chain.

5. The combination with a hoist having a twopart casing and a hook-receiving aperture formed at the joint therebetween, of a separate, suspension bracket formed with a horizontal arm and a depending arm, a depending attaching member carried by the horizontal arm for engagement with the hook-receiving aperture of the casing,

a perforated tab carried by the bracket for rigidly fastening said bracket to said casing, and said depending arm being-formed at its lower end with link-receiving recesses and with a link-receiving slot, arranged at right angles to the recesses, for engagement with the adjacent links at the free end of the hoist chain.

6. The combination with a hoist having a twopart casing, and a hook-receiving aperture formed at the joint therebetween, of a separate, suspension bracket formed with a depending, attaching member for engagement with the hook-receiving aperture of the casing, a perforated tab for rigidly fastening said bracket tosaid casing, said bracket being provided with a depending arm formed with means for attaching the end of the load-lift chain of the hoist thereto, said bracket being formed with a substantially semi-spherical recess, a semispherical collar located in the recess of the bracket, and a bracket hook having an end secured to said collar.

7. The combination with a hoist having a casing, and a hook-receiving aperture therein, of a separate, suspension bracket formed with a horizontal arm and a depending arm, a depending attaching member carried by the horizontal arm for engagement with the hook-receiving aperture of the casing, said depending arm being formed at its lower end with link-receiving recesses and with a link-receiving slot, arranged at right angles to the recesses, for engagement with the adjacent links at the free end of the hoist chain, and means for securing said links in place within the recesses and the slot.

8. The combination with a hoist having a twopart casing, and a substantially semi-spherical hook-receiving aperture formed in the joint therebetween, of a separate, suspension bracket formed with a substantially semi-spherical depending member for engagement with the hook-receiving aperture of the casing, a perforated tab for rigidly fastening said bracket to said casing, said bracket being provided with a depending arm formed with means for attaching the end of the chain thereto, and a bracket hook provided with a substantially semi-spherical member, said bracket being formed with a substantially semi-spherical recess for receiving the semi-spherical member of the hook.

9. The combination with a hoist having a twopart casing, and a substantially semi-spherical hook-receiving aperture formed in the joint therebetween, of a separate, suspension bracket formed with a substantially semi-spherical depending member for engagement with the hookreceiving aperture of the casing, a perforated tab for rigidly fastening said bracket to said casing, said bracket being provided with a depending arm formed with means for attaching the end of the chain thereto, a bracket hook provided with a substantially semi-spherical member, said bracket being formed with a substantially semi-spherical recess for receiving the semi-spherical member of the hook, and a retaining wall formed across the semi-spherical recess, whereby a stop is provided for retaining the hoist in substantially upright position when not sustaining a load.

FRANK E. STAHL.